/*
 * Copyright 2011 Clean GWT
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package com.cleangwt.json.client;

import com.google.gwt.json.client.JSONNull;
import com.google.gwt.json.client.JSONValue;

/**
 * The json value serializer to convert type object to {@link JSONValue}.
 * 
 * @author Jess
 * @version 1.0
 * @since 1.0
 * 
 * @param <T> the type to convert to {@link JSONValue}
 */
public abstract class JsonValueSerializer<T> implements JsonSerializer<T> {

  @Override
  public String serialize(T value) {
    if (value == null) {
      return JSONNull.getInstance().toString();
    } else {
      return toJson(value).toString();
    }
  }

  /**
   * Converts type object to {@link JSONValue}.
   * 
   * @param object the type object
   * @return the json value
   */
  abstract public JSONValue toJson(T value);

}
